Suzuki DR 125, Service Manual

Page: 66 / 222

3-30 ENGINE
If the camshaft journal oil clearance exceeds the limit, measure
the inside diameter of the camshaft journal holder and outside
diameter of the camshaft journal. Replace the camshaft or the
cylinder head depending upon which one exceeds the specifica-
tion.
!
Camshaft journal holder I.D.
Standard: 22.012 – 22.025 mm (0.8666 – 0.8671 in)
"
09900-22403: Small bore gauge
!
Camshaft journal O.D.
Standard: 21.959 – 21.980 mm (0.8645 – 0.8654 in)
"
09900-20205: Micrometer (0 – 25 mm)
CAMSHAFT RUNOUT
Measure the runout using a dial gauge. Replace the camshaft if
the runout exceeds the limit.
!
Camshaft runout
Service Limit: 0.10 mm (0.004 in)
"
09900-20606: Dial gauge (1/100 mm)
09900-20701: Magnetic stand
09900-21304: V-block (100 mm)
CAM CHAIN TENSION ADJUSTER
Make sure the push rod movement. If the push rod is stuck or
spring mechanism failed, replace the cam chain tension adjuster
assembly with a new one.
CYLINDER
DISTORTION
Check the gasket surface of the cylinder for distortion using a
straightedge and thickness gauge. Take clearance readings at
several places. If any reading exceeds the service limit, replace
the cylinder.
!
Cylinder distortion
Service Limit: 0.05 mm (0.002 in)
"
09900-20803:
Thickness gauge